No I've not been a member here before (I only found this site recently).

I know I let her do it and I think that's part of my frustration. My latest tactic has been avoidance, which hurts because I love my nephews but I need some space or I fear ill explode the next time she asks me to baby sit.

I need to learn to say no and not back down. But I already resent her for taking advantage or me, and I'm annoyed at myself too.